Gas-burner.



R. MOMAND.

GAS BURNER. APPLICATION FILED 1'33. 3, 1910.

1,010,445, 7 Patented 1190.5, 1911.

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WWW MW COLUMBIA PLANOGRAI'N c0.. WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

RAGLAND MOMAND, OF NEW YORK, N. Y., ASSIGNOB T0 PRESSURE LIGHTING COMPANY, A CORPORATION OF DELAWARE.

GAS-BURNER.

Specification of Letters Patent.

Patented Dec. 5, 1911.

Application filed February 3, 1910. Serial No. 541,910.

To all whom it may concern:

Be it known that I, RAGLAND MOMAND, a citizen of the United States, residing at New York, county of New York, and State of New York, have invented certain new and useful Improvements 1n Gas-Burners, fully described and represented in the following specification and the accompanying draw-- ings, forming a part of the same.

This invention relates to improvements in,

gas burners, and more particularly to that class of burners in which the lighting of the Generally considered, the object of the invention is to produce an efficient burner of the class referred to, which shall be certain in its operation and economical in its con-1 struction and operation.

Other objects of the invention are to improve the details of construction by which the main object of the invention is carried into effect, some of said detail improvements being, however, applicable to burner constructions of types differing from the one specifically above referred to. lVith these and other objects in view, the invention consists in certain constructions, and in certain parts, improvements and combinations as will be hereinafter fully described and then specifically pointed out.

In the accompanying drawings :Figure 1 is an elevation of a form of burner construction embodying the invention. Fig. 2 is a sectional elevation of the construction illustrated in Fig. 1. Fig. 3 is a sectional detail view of the valve mechanism for controlling the main and pilot light conduits, the parts being shown in different positions from that which they occupy in Fig. 2. Fig. 4 is a detail view illustrating a modified form of the valve construction shown in Fig. 3.

Referring to the drawings which illus trate one embodiment of the invention,'1 indicates the'base of the burner construction generally considered, this base -being provided with suitable means, as a threaded nipple 2, by which the burner may be connected to a gas pipe, said pipe being indicated at 3.

In the best constructions involving the invention, the base will consist of two small castings 4, 5 arranged to provide a chamber, as 6, for purposes which will be hereinafter explained.

Constructions embodying the invention in its best form will further include agas supply chamber which may be varied in its con struction and location. In the particular construction illustrated, this chamber is formed by two cylinders 7 8, the cylinder 8 being of glass, for inspection purposes, the two chambers being connected by a suitable coupling, as 9. As shown, the cylinder 7 is threaded into the coupling 9, and is also secured to a hollow boss, as 10, extending upward from and forming a part of the casting 4.

, Constructions embodying the invention, as to all its aspects, will include means for providing what is known as a pilot light and will, therefore, include a pilot. light conduit and a main light conduit. These conduits may be variously formed and arranged. In the particular construction illustrated, the glass cylinder carries a coupling 11 in which is threaded a burner base 12. The main light conduit 13 extends through the base and communicates with the supply chamber formed by the cylinders 7, 8, by means of a nipple 141, or in any other suitable manner. When the main light conduit is formed in the manner described, the burner base may carry a burner tube, as 15, which may be the ordinary perforated Bunsen burner tube. this tube communicating with a burner gallery 16 arranged to carry a mantle v17 supported by wires 18, this gallery and mantle supporting construction being of a type wellknown in the art. Inthe particular construction illustrated, the pilot light conduit is formed by a tube 19 surmounted by a chamber 20, the tube 19 connecting with a passage 21 which extends through the burner means, when employed, may be varied, in

the best constructions embodying the invention, the pilot light conduit will be arranged to provide a regulating chamber 23. The flow of gas into this chamber may be controlled by suitable means, such as a screw 24 which may be tapped. through the wall 5 of the burner base. Similarly, the main light conduit 13 may be formed to provide a regulating chamber 25. In the best constructions embodying the invention, the regulation of the flow of gas from the main light conduit will be controlled by a plunger valve, as 26, this valve being seated in a suitable perforation in a web 27 located in the conduit, the conduit being further provided with a valve seat, as 28, which may 15 be formed, as shown, by a nipple screwed into the burner base. As shown, the valve is normally held open by means of a compression spring 29 resting at one end against the shoulder formed by the nipple 28, and at its other end against a flange 30 formed on the valve stem. This flange, in the particular construction illustrated, also operates as a directing guide for the valve. An additional directing guide, as 31, may be mounted on the valve stem, if desired. Although the movement of the valve in opposition to the spring, when this spring construction is employed, may be controlled in various ways, in the construction illustrated, there is provided a controlling screw as 32, tapped through the wall of the burner base, this screw having a beveled end 33 underlying the end of the plunger valve. It is obvious that, by turning the screw, the flow of gas 35 past the valve may be varied, as desired. It will be observed that, in the construction illustrated, the screws 24 and 32 are both readily accessible from the outside of the casting and afford means for accurately and readily regulating the flow of gas through the conduits.

It will be understood that, in construction of the character referred to, the flow of gas through the pilot light conduit and the main light conduit takes place alternately, that is to say, when one of the conduits is open the other is closed. The regulating chambers 23 and 25 have an important function in burners of this class, for the reason that after the supply of gas is cut oft" from the conduits, they afiord what may be termed a secondary supply of gas by Which the main light or the pilot light, as the case may be, is supplied. Thus,

if the supply of gas be cut off from the main light conduit, the regulating chamber 25 will afford a sufficient supply of gas to keep the main light burning until the pilot light is ignited; and, similarly, when the supply of gas to the pilot light conduit is cut ofl", the regulating chamber 23 will maintain a suflicient supply of gas to the pilot light until the main light is ignited.

Means will be provided, in constructions embodying the invention in all its aspects,

. supply chamber. As shown, the tube is profor alternately opening and closing the main and pilot light conduits. In the best constructions embodying the invention, a valve will be employed for this purpose which may be described as an overbalancing valve mechanism, that is to say, the mechanism will be so constructed that any movement thereof away from a position of equilibrium for operating the valve will be assisted, by the construction of the valve mechanism.

In the particular construction illustrated in Figs. 2 and 3, the valve consists of a hollow block 34 pivoted on a hanger 35 which may be screwed into the bottom of the burner base. This hanger is shown as extending into a recess 36 formed in the top of the block. The block is formed to provide a liquid containing chamber 37 illustrated as closed by a sore w 38. This chamher, in the construction illustrated, is partly filled with a heavy liquid, such as mercury, indicated at 37. It is apparent that if the block is swung slightly in either direction, the mercury will run to that side of the block which is lower, thus tipping the block.

In the construction shown, the block carries two pivoted cups 39, 40, these cups also containing a sealing fluid, such as mercury, the cups being located underneath the nipples 14 and 22- and so arranged that the mercury in one cup will close one of the nipples when the block is in one position and the other of the nipples when the block is in its other position.

In the construction illustrated in Fig. 4, the valve is formed by a block, as 41, which may be pivoted to the hanger 35 in the manner before described, the pivotal point 42 being well below the center of gravity of the block. In the construction illustrated in this figure, the top of the block is beveled both ways from the center, the bevels being marked 43, 44, and is provided with a flexible surface 45, such as rubber or leather, though other materials may be used. The bevels are so arranged that when the block stands in one position the flexible surface on one of the bevels will close one of the nipples 14, 22, and when it is in the other position, it will close the other nipple.

Suitable means will be provided for operating the means for opening and closing the pilot and-main light conduits, and, in the best constructions, these means will be 133 of such a character as to be operated by variations of pressure in the gas supply pipes. In the particular construction illustrated, the bottom of the valve block is provided with a double inclined surface 46 arranged to be engaged by a flexible nose or projection 47 on an actuator which is shown as formed by a longitudinally moving tube 48, this tube serving as a gas inlet for the vided with a cap 49 perforated, as at 50, through which the gas passes into the chamber, the nose 17 being secured to the cap.

The means by which the movement of the actuator rod, when this form of construction is employed, is effected by means of variations in the gas pressure in the gas supply pipes, may be widely varied. In the particular construction illustrated there is provided a flexible diaphragm, as 51, located in the actuator chamber 6 and clamped between the two parts of the casting, 4t, 5 which form this chamber. The diaphragm 51 is secured to the hollow actuator rod or tube 48 by nuts 52,- 53 threaded on the actuator rod. The rod passes through an opening in the diaphragm, the nut 52 being located on one side of the diaphragm and the nut 53 on the other side. It is apparent that when the nuts are firmly screwed up, the diaphragm will be clamped between them and secured to the actuator ro The bottom of the actuator chamber is provided with openings 54 by which, in the particular construction illustrated, gas is admitted underneath the diaphragm. The weight of the actuator rod and connections, when the particular construction illustrated is employed, is sufiicient to maintain the diaphragm in its lowest position against a given pressure of gas in the supply pipes. When, however, the pressure in the pipes exceeds the given pressure, the diaphragm and actuator rod will be given a movement which, in the particular construction illustrated, moves the actuator rod vertically.

Notwithstanding the fact that the gas is delivered at a given pressure at the gas works, at varying distances from the works the pressure in the supply pipes will vary. The pressure at which the diaphragm will move may be controlled by a weight or weights, as 55, which may be placed upon the upper nut 52, the casting 4 being provided with an opening, as 56, through which the weights may be inserted or removed.

In order to guide the actuator rod, when this construction is employed, in its movement, the nut 53 may be provided with a tube, as 57, extending through an opening 58 1n the lower partof the casting 5, and the opening 59 in the casting 4: through which the actuator rod passes may be of a proper size so that the wall of the opening will also act as a guide for the rod. The rod may further, if desired, be provided with an adjustable limiting stop, formed as a nut 60, which will determine the amount of the operating movement of the rod.

When the invention is embodied in constructions like the one which has been above described, the gas supply chamber may be provided with a liquid seal to prevent the escape of gas therefrom into the actuator chamber. While this may be accomplished in any suitable manner, in the construction illustrated, the boss 10 of the casting 4 may be formed to provide a chamber, as 61, arranged to contain mercury, indicated at 62, and the actuator rod may be provided with a cup 63, secured thereto by means of nuts 64:, 65, the lower edge of the cup dipping into the mercury and thereby forming a seal.

With the construction before described and assuming, for instance, that the parts are in the position shown in Fig. 2 in which the pilot light conduit is closed, and gas is flowing through the main light conduit, if it be desired to extinguish the main light and light the pilot light, the pressure in the supply pipes will be increased. WVhen the pressure increases to a point sufficient to overcome the weight of the actuator rod and the weights. carried by the rod construction, the diaphragm 51 will rise, causing the flexible nose 47 of the actuator rod to engage the right hand one of the double inclines 16 and ride up this incline. The valve block is provided, in the construction illustrated, with two recesses 66, 67 one being located at the base of one of the inclines and the other at the other. As the edge of the flexible nose carried by the actuator rod engages the recess 66, it will tip the valve block. As soon as the block begins to tip (referring still to Fig. 2) the pilot light conduit is opened, thus permitting the gas to flow through the pilot light conduit. The movement oi the block will continue until it passes the position of equilibrium when it is overbalanced and rocks upward, closing the main light conduit, by which time the pilot light will be lighted. If, however, the movement of the block has been so rapid as not to have allowed the gas to flow through the pilot light conduit and become ignited before the main light conduit is sufficient supply of gas in the secondary supply chamber 25 to maintain the main light until the pilot light is ignited. The pressure may now be decreased in the supply pipes, permitting the diaphragm to descend, carrying the actuator rod with it, the parts thus assuming their normal position. The parts having assumed their normal position will remain in it until the pressure in the supply pipes is again increased, which increase will effect the movement of the block in theopclosed, there will be posite direction, extinguishing the pilot conduits lead, a tipping overbalancing valve member in said chamber for controlling said conduits, a gas seal for said chamber, and a valve actuator connected with said seal and having a flexible extension located in said chamber exteriorly of said seal for operating said valve member.

2. In a gas burner, the combination with a main light conduit and a pilot light coir duit, of a supply chamber from which said conduits lead, a tipping overbalancing valve member in said chamber for controlling said conduits, a gas seal for said. chamber, a

valve actuator connected with said seal and having a flexible extension located in said chamber exteriorly of said seal for operating said valve member and means located exteriorly of said chamber and operated by variations of gas pressure in the supply pipe for effecting the operation of the actuator.

3. In a gas burner, the combination with a main light conduit and a pilot light conduit, of a supply chamber from which said conduits lead, an overbalancing tipping valve member located in said chamber for alternately opening and closing said conduits, a valve actuator having a flexible extension located in the chamber for operating said valve mechanism, and means located exteriorly of said chamber and operated by variations of gas pressure in the supply pipe for effecting the operation of the actuator.

4. In a gas burner, the combination with a pilot light conduit and a main light conduit and a chamber from which said conduits lead, of a valve mechanism in the chamber for alternately opening and closing the conduits, a valve actuator including a movable inlet tube through which gas is admitted into the chamber, and means operated by variations of gas pressure in the supply pipes for effecting the operation of the actuator.

5. In a gas burner, the combination with a pilot light conduit and a main light conduit and a chamber from which said conduits lead, of a tipping valve in the chamber for alternately opening and closing the conduits, a valve actuator including a movable inlet tube through which gas is admitted into the chamber, and means operated by variations of gas pressure in the supply pipes for effecting the operation of the actuator.

6. In a gas burner, the combination with a pilot light conduit and a main light conduit and a chamber from wh1ch said con- -duits lead, of a tipping valve in the chamber for alternately opening and closing the conduits, a valve actuator including a movable inlet tube carrying a flexible operating nose through which tube gas is admitted into the chamber, and means operated by variations of gas pressure in the supply pipes for effecting the operation of the actuator.

7. In a gas burner the combination with a gas supply chamber, of a base above the chamber, a burner above the base, pilot and main light conduits leading through the base and communicating with the supply chamber, valve mechanism in the supply chamber for alternately opening and closing the conduits, a movable inlet tube for the chamber, said tube having a flexible nose for operating the said mechanism, and means operated by variations in gas pressure for actuating the tube.

8. In a gas burner, the combination with a chambered base, of a gas supply chamber, main and pilot light conduits leading from the supply chamber, a gas seal for the supply chamber, an actuator rod extending through said seal, a movable gas seal in the base with which the rod is connected, :1 flexible nose carried by the rod, and a valve mechanism in the supply chamber for controlling the main and pilot light conduits operated by said nose.

9. In a gas burner, the combination with an actuator chamber, of a gas supply chamber mounted thereon, a gas actuating diaphragm in the actuator chamber, an actuator rod connected with the diaphragm, said rod having a flexible operating nose, pilot and main light conduits leading from the supply chamber, a gas seal for the supply chamber, and a tipping overbalancing valve located in the supply chamber and operated by the flexible nose for alternately opening and closing the conduits.

In testimony whereof, I have hereunto set my hand, in the presence of two subscribing witnesses.

RAGLAND MOMAND. lVitnesses A. IVHITE, J. J. KnARNs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

